Madrona K-8 School Replacement Project, Edmonds, Washington
Shannon & Wilson
February 13, 2024
This letter report summarizes the procedures and results of supplemental sampling of stormwater for analyses of per- and polyfluoroalkyl substances (PFAS) at tge Edmonds School District No. 15 (ESD) Madrona K-8 School Replacement Project (Project). The purpose of this voluntary sampling event was to objectively evaluate for the presence of PFAS in stormwater following stormwater sampling conducted by Olympic View Water abd Sewer District (OVWSD) on October 22, 2022. Because the procedures used to collect stormwater samples by OVWSD were not provided, the usability and validity of their data are unknown. A map of the project location is provided as Figure 1. This letter is revised from the final version dated February 8, 2024, to correct the pagination.
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